Vehicle-tire.



T. H. PALMER,

VEHICLE URE. l APPLicATloN man .mM/1.1913. Patented June 1, 1915.

WITNESSES.'

THERON n. PALMER, or nain, rnniisrnvaaiin. 1

and useful Improvements in Vehicle-Tires;

and I dohereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had tol the accompanying drawings, and to the letters of reference marked thereon, forming part of this specification. y

This invention relates to tires for use on vehicles, and particularly to pneumatic vehicle tires.

The broad, general object of theLinvention is to provide a tire with a tread urface so designed and constructed jas to increase the traction of the tire, and prevent the skidding ofthe vehicle way.

The invention primarily consists in ,providing the tread ofthe tire with a series of diagonal ribs crossing each other atapproxi` mately right angles, and provided with cup like depressiorfs extendingv below the tops of the ribs, at the points where their ends join, and at the points where they cross each other, by means of, which there is provided a circumferential series of rectangular and circular surfaces alternating with each upon a slippery roadother, depressed below the tops of the ribs l and also a circumferential series of circular depressed surfaces at each side of the central row. By means of this construction, ll

am-,enabled to combine the so called vacuum cups with the diagonal ribs in such a manner that the traction of the tire is increased and .at the same time the'skidding of the tire on wet or slippery road-ways is prevented. p

In the accompanying drawing, Figure l, is a plan view of a section of my improved tire. Fig. 2, is a transverse section of the l same, on the line X-X in Flo. 1.

Referring new to the drawing, the body or tubular portion, A, of the tire, is of the single tube pneumatic type, the tread thereof being provided with a series of diagonal ribs B, provded with circular enlargements C, at the in ersections of their centers, and

. 4Spec'iiication of Letters Patent.

residing at L Erie, in the county of Erie and State of" Pennsylvania, have invented certain new4 tire-tread and coin .and be' blikelyto tread,l as is the case with many types of insists-'rien at 4the junctions of their ends, in fle centers .retest-ea aan@ f., y Appi'ieation inea my i, ia'ia. serial No. 764,879;

and centers also inclose substantially ree tangular depressions E, 'the bottoms of which are below the tops of the ribs .These depressions E, thus also forni cells,

which operate as do the cups D, as vacuum cups, which act in congunction with the ribs B, to give adhesion of the tire tread to theroad-way upon which it is operated, and

prevent its slipping and skidding therec i.

The ribs B, depressions E, and the cups D, are preferably molded upon the tire* tread, integral therewith,fand may bespread i farther apart or closetogether, or the angles thereof to a line passing circumferentally around the tire-tread, and may be varied as desired. The ribs and cups are so designed and arranged that they at all times act not only to increase the grip of the tread in the line ofyrotationl of the tira-but also at the same time operate to prevent side-wise movement of the tire-tread upon the roadway.

1n placing the r'bs diagonally upon the ining the vacuum i depressions E, and the cups D, therewith, the ribs are in the best shape to prevent` the adhrence of `.ravel or other loose matter to the' tire-trea", and the wedging thereof-he tween the ribs so be ground into the tire non-skid tires provided with projections upon the surface thereof, and for this {reason both the effectiveness and wear of the tire gf my improved tire, creased. l

Having thus described my invention and the advantages thereof, so as to enable are materially inas to be carried thereby `.'f? i others to utilize the same, what l claim as la new is: 4

An anti-skid pneumatic tire, having a plurality of peripheral rows of raisedL cups connected by diagonal ribs, substantially as described.

lOO

In testimony whereof tl affix mylsignap ture, in presence of two witnesses.

THERON R. PAlillER. Witnesses:

WILLIAM J. Semin, ROLAND E. Sissoiv. 

